| Project IMPACT (US) [26] | APACHE III (US) [14] | Brazil APACHE III Study [27] | ENASSG (US/Europe) [22] | EURICUS-I (Europe) [28] |
---|---|---|---|---|---|
Admissions | 40,435 | 17,440 | 1734 | 14,745 | 10,027 |
Units | 55 | 42 | 10 | 137 | 89 |
Mean age | 59.9 | 59 | 52 | 57.2 | 59.3 |
Male (%) | 54.3 | 44.8 | 62 | 59.6 | - |
Surgical status (%) | Â | Â | Â | Â | Â |
   Nonsurgical | 64.1 | 57.7 | 64.2 | 48.4 | 55.9 |
   Elective | 22.5 | 33.3 | 22.7 | 31.2 | 24.3 |
   Emergency | 13.4 | 9.0 | 13.1 | 19.6 | 19.8 |
Risk model | SAPS II | APACHE III | APACHE III | All | SAPS II |
   Mean probability | - | 0.165* | 0.204 | - | 0.223 |
Mortality (%) | Â | Â | Â | Â | Â |
   Unit | - | - | 29 | - | 13.9 |
   Hospital | 18.2 | 16.5 | 34 | 21.8 | 20.0 |
 | NICE (Netherlands) [29] | ASDI (Austria) [30] | PAEEC (Spain) [31] | PSSSG (Portugal) [32] | JSICM (Japan) [33] |
Admissions | 55,016 | 25,998 | 12,174 | 984 | 5,107 |
Units | 18 | 31 | 86 | 19 | 33 |
Mean age | - | 62.1 | 57.7 | 55.4 | 58.3 |
Male (%) | 65.1 | 58.3 | 68 | 67.7 | 64.5 |
Surgical status (%) | Â | Â | Â | Â | Â |
   Nonsurgical | 23.2 | 41.5 | 75.9 | 68.2 | 40.8 |
   Elective | 65.4 | 34.1 | 13.7 | 19.6 | 49.4 |
   Emergency | 11.4 | 24.4 | 10.4 | 12.2 | 9.8 |
Risk model | APACHE II | SAPS II | APACHE III | APACHE II | APACHE III |
   Mean probability | 0.25†| 0.193 | 0.198 | 0.335 | 0.181 |
Mortality (%) | Â | Â | Â | Â | Â |
   Unit | 13.3†| - | - | 24.5 | - |
   Hospital | 20.9†| 17.6 | 21.2 | 32.0 | 18.2 |